In today's business world,
network security is critical to information security. It is essential to have
proper strategies and mitigation processes in place to secure networks for both
business and personal communication. These strategies help to ensure optimum
digital security and compliance.
If you are preparing for a network security interview, it is essential to be familiar with common network security questions. These questions help you prepare for the interview and demonstrate your knowledge of network security.
Interview Questions and Answers:
- What is Confidentiality,
Integrity, and Availability (CIA) in network security?
The three pillars of information security, also known as the CIA triad, where Confidentiality refers to maintaining the privacy of information among authorized users. Integrity refers to the accuracy and reliability of network data and the prevention of unauthorized modification and alterations. Availability refers to ensuring authorized users have access to information and resources when they are needed and that these resources are not disrupted or disabled by unauthorized or malevolent actions.
- What is a Frame Relay?
Frame Relay is a digital packet-switched data link layer network protocol used to communicate Local Area Networks (LANs) and send data over Wide Area Networks (WANs). Despite the fact that Frame Relay and X.25 share some similarities in their packet-switching technologies, they operate using different protocols and methods.
- What do you mean by beaconing?
Beaconing is a periodic digital signal transmitted between an infected device and a remote command-and-control (C2) server. This allows cybercriminals to control malware remotely.
- What is bandwidth?
The bandwidth refers to the limited range of signal frequencies that a line can carry. Bandwidth is frequently confused with Internet speed, but it is the amount of data sent over a network in a given time, measured in Bits-per-second.
- What are the metrics for a
router's best path selection?
Here
are the parameters:
● Longest prefix match
● Minimum administrative distance
● Lowest metric value
- How
is threat different from vulnerability?
A threat is an external factor that causes damage to an IT system.
Vulnerabilities are system or network weaknesses that attackers can exploit to obtain unauthorized access, cause damage, or steal information.
- What distinguishes symmetric encryption from asymmetric encryption?
Symmetric encryption employs the same key for encryption and decryption, while asymmetric encryption uses different keys for each process. Symmetric is faster for obvious reasons, but it sends the key over an encrypted channel, which is unsafe.
- What is salting?
Salting is the process of adding pseudorandom data to a password before hashing it to make it tougher for an attacker to decrypt it.
- What do you mean by the proxy
server?
A proxy server acts as a means of communication between an end user and a server. It receives requests from clients and then forwards them to the appropriate servers. This allows the end-user to access the internet or other networks securely and efficiently. The proxy server can also cache frequently accessed data, which can help to reduce bandwidth usage and improve performance.
- How can an attack impact your
organization?
● Loss or corruption of confidential documents
is detrimental to the survival and success of a business.
● Loss of customers and reputation
● Reduction in brand value
● Decline in profit and loss of money
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